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GB/T 24186 abrasion resistant steel plates for construction machine

GB/T 24186 abrasion resistant steel plates for construction machine

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GB/T 24186 standard specifies the steel grades, size, shape, weight and allowable deviation, technical requirements, test methods, inspection rules, packaging, marking and quality certificate of high strength abrasion resistant steel plates for construction machinery. The main steel grades of GB/T 24186 abrasion resistant steel plates are NM300, NM360, NM400, NM450 NM500, NM550, NM600.

GB/T 24186 abrasion resistant steel plates chemical composition:


Grade

C max.

Si max.

Mn max.

P max.

S max.

Cr max.

Ni max.

Mo max.

Ti max.

B max.

Als min.

NM300

0.23

0.70

1.60

0.025

0.015

0.70

0.50

0.40

0.050

0.0005-0.006

0.010

NM360

0.25

0.70

1.60

0.025

0.015

0.80

0.50

0.50

0.050

0.0005-0.006

0.010

NM400

0.30

0.70

1.60

0.025

0.010

1.00

0.70

0.50

0.050

0.0005-0.006

0.010

NM450

0.35

0.70

1.70

0.025

0.010

1.10

0.80

0.55

0.050

0.0005-0.006

0.010

NM500

0.38

0.70

1.70

0.020

0.010

1.20

1.00

0.65

0.050

0.0005-0.006

0.010

NM550

0.38

0.70

1.70

0.020

0.010

1.20

1.00

0.70

0.050

0.0005-0.006

0.010

NM600

0.45

0.70

1.90

0.020

0.010

1.50

1.00

0.80

0.050

0.0005-0.006

0.010

GB/T 24186 abrasion resistant steel plates mechanical properties:


Grade

Thickness

Hardness (HBW)

Elongation % min.

Tensile strength(MPa) min.

NM300

≤80

270-330

14

1000

NM360

≤80

330-390

12

1100

NM400

≤80

370-430

10

1200

NM450

≤80

420-480

7

1250

NM500

≤70

470 min.

-

-

NM550

≤70

530 min.

-

-

NM600

≤60

570 min.

-

-

The thickness range of GB/T 24186 abrasion resistant steel plates is within 80mm. And it is also varies with the specific steel grades. GB/T 24186 abrasion resistant steel plates are applicable for wear-resistant structural parts of mining, construction, agriculture and other construction machinery, as well as other fields.

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